← MES Jr. Grade
Past Questions
Who among the following is not among the signatories in the Mizo accord dated 30.6.1986 between Government of India, Government of Mizoram and Mizo National Front?
A)
Lalkhama
B)
Lalthanhawla
C)
Laldenga
D)
R.D.Pradhan
The Mizo Accord of 30 June 1986 was signed by Laldenga (MNF), R.D. Pradhan (Government of India), and Lalthanhawla (Government of Mizoram). Lalkhama was not a signatory to this accord. Hence, the correct answer is Lalkhama.
India’s first satellite is named after
A)
Aryabhatta
B)
Bhaskara II
C)
Bhaskara I
D)
Albert Einstein
India’s first satellite was named Aryabhata, after the ancient Indian mathematician and astronomer Aryabhata. Among the given options, this corresponds to option (a) Aryabhatta. The other options are incorrect because Bhaskara I and Bhaskara II were later Indian satellites, and Albert Einstein was not the name of India’s first satellite.
“Not me but you” is the motto of
A)
NSS
B)
NCC
C)
NYC
D)
SAI
"Not me but you" is the motto of the National Service Scheme (NSS). It emphasizes selfless service and community welfare. NCC has the motto "Unity and Discipline," while SAI and NYC are not associated with this motto.
The energy of food is measured in
A)
Kelvin
B)
Calories
C)
Bushel
D)
None of these
The energy content of food is measured in calories (more precisely, kilocalories in nutrition). Kelvin is a unit of temperature, and bushel is a unit of volume/capacity, so both are incorrect.
A sudden, shortlived decline in economic activity followed by a sharp fall in production and rise in unemployment is termed as
A)
Stagflation
B)
Recession
C)
Deflation
D)
Depression
A recession is a sudden, short-lived decline in economic activity, usually marked by falling production, income, and rising unemployment. Stagflation means slow growth with inflation, deflation means a fall in the general price level, and depression is a much deeper and more prolonged downturn than a recession.
Light Year is related to
A)
energy
B)
speed
C)
distance
D)
intensity
A light-year is the distance light travels in vacuum in one year. It is a unit of length, not of energy, speed, or intensity. Therefore, the correct answer is distance.
Who among the following won double Gold medals in one kilometre and two kilometre time trial cycling event in 2015 Special Olympics held in Los Angeles?
A)
Ravi Kumar
B)
Harjit Singh
C)
Balbir Singh
D)
Rajvir Singh
The athlete who won double gold medals in the 1 km and 2 km time trial cycling events at the 2015 Special Olympics in Los Angeles was Ravi Kumar. The other names in the options are not associated with this specific achievement.
Which of the following is one of the remarkable characteristics of Harappan cities?
A)
Use of burnt bricks
B)
Great bath
C)
Drainage system
D)
All of these
Harappan cities are known for several remarkable urban features: they used burnt bricks in construction, had impressive structures like the Great Bath at Mohenjo-daro, and possessed a highly developed drainage system. Since all the listed features are characteristic of Harappan urban planning, the correct answer is 'All of these'.
The air we inhale is mixture of gases. Which of the following gases in the mixture is highest in percentage?
A)
Carbon dioxide
B)
Nitrogen
C)
Oxygen
D)
Ozone
Air is a mixture of gases, and nitrogen makes up the largest share of the atmosphere at about 78%. Oxygen is the next major component at about 21%, while carbon dioxide is only a trace gas and ozone is present in very small amounts. Therefore, nitrogen has the highest percentage in inhaled air.
Plants absorb most part of water needed by them through their
A)
embryonic zone
B)
growing point
C)
root hairs
D)
zone of elongation
Plants absorb most of the water through root hairs because they provide a very large surface area and have thin cell walls, which helps in efficient absorption of water from the soil by osmosis. The embryonic zone and growing point are regions of cell division and growth, while the zone of elongation is mainly for cell enlargement, not water absorption.
Which of the following is associated with the birth anniversary of Mahatma Gandhi?
A)
Saansad Adharsh Gram Yojana (SAGY)
B)
Pradhan Mantri Jan Dhan Yojana (PMJDY)
C)
Swachh Bharat Mission
D)
Beti Bachao, Beti Padhao
Swachh Bharat Mission was launched on 2 October 2014, the birth anniversary of Mahatma Gandhi, to honor his emphasis on cleanliness. The other options were launched on different dates: SAGY on 11 October 2014, PMJDY on 28 August 2014, and Beti Bachao, Beti Padhao on 22 January 2015.
The only Indian to win the Nobel prize in physics is
A)
Dr. J.C.Bose
B)
Dr. C.V.Raman
C)
Dr. Vickram Sarabhai
D)
Dr. H.J.Bhabha
C.V. Raman is the only Indian who won the Nobel Prize in Physics, awarded in 1930 for his work on the scattering of light, known as the Raman Effect. J.C. Bose made pioneering contributions to physics and biology but did not receive the Nobel Prize. Vikram Sarabhai and H.J. Bhabha were eminent Indian scientists, but neither won the Nobel Prize in Physics.
If force is expressed in Newton and the distance in metre, then the work done is expressed in
A)
Joule
B)
Kg wt
C)
Kg wt m
D)
Watt
Work done = force × distance. If force is in Newton and distance in metre, the unit becomes N m, which is defined as 1 Joule. Kg wt and Kg wt m are gravitational units, and Watt is the unit of power, not work.
A firm manufactures a product which is sold for Rs.10.50 per unit and the fixed cost of the assets is Rs.50000/- with a variable cost of Rs.6.50 per unit. How many units must be produced to earn a profit of Rs.1000/-? What would be the profit for sales volume of 20,000 units?
The flame type that is normally used to weld copper base alloys in oxy-oxy-acetylene welding method is
A)
carburising flame
B)
neutral flame
C)
oxidising flame
D)
reducing flame
Copper and copper-base alloys are normally welded with a neutral flame in oxy-acetylene welding. A neutral flame avoids adding excess oxygen or carbon, which could otherwise oxidize or contaminate the weld metal. Carburising and reducing flames are used where a reducing atmosphere is specifically needed, while an oxidising flame is generally unsuitable for copper alloys because it promotes oxidation.
The depth of cut depends upon
A)
tool life
B)
power required
C)
type of cut required
D)
all of these
The depth of cut in machining is selected based on multiple factors: tool life, because heavier cuts increase tool wear; power required, because deeper cuts need more machine power; and the type of cut required, because roughing and finishing operations use different depths of cut. Therefore, all the given factors influence depth of cut.
Manganese in steel increases its
A)
ductility
B)
hardness
C)
fluidity
D)
tensile strength
Manganese is added to steel mainly to increase its strength and toughness. It improves the tensile strength of steel and also helps remove sulfur by forming manganese sulfide, reducing brittleness. Among the given options, tensile strength is the best answer. Ductility is not primarily increased, hardness is not the main effect here, and fluidity is more associated with cast iron or molten metal behavior.
Queuing theory is associated with
A)
sales
B)
inspection time
C)
waiting time
D)
production time
Queuing theory deals with lines or queues and studies how customers/jobs wait for service, the number of waiting units, and service efficiency. Hence it is associated with waiting time. The other options are not the main focus of queuing theory: sales, inspection time, and production time belong to different areas of management/production analysis.
Which of the following processes are heat treatment processes?
A)
normalizing
B)
annealing
C)
quenching
D)
all of these
Normalizing, annealing, and quenching are all heat treatment processes used to alter the microstructure and mechanical properties of metals. Annealing involves heating and slow cooling, normalizing involves heating and air cooling, and quenching involves rapid cooling after heating. Since all three are heat treatment processes, the correct answer is 'all of these'.
Depreciation of machines is considered as
A)
direct expense
B)
indirect expense
C)
direct material cost
D)
indirect material cost
Depreciation on machines is treated as an overhead cost, because it cannot be traced directly to a specific unit of production. It is therefore classified as an indirect expense. It is not direct material cost, and it is not a direct expense because it does not relate directly to a single product or job.
In four high rolling mill the bigger rollers are called
A)
guide rolls
B)
back up rolls
C)
main rolls
D)
support rolls
In a four-high rolling mill, the two small rolls are the working or main rolls that actually contact the metal, while the larger rolls are placed behind them to provide support and reduce deflection. These larger rolls are called back up rolls. Hence, option (b) is correct. Guide rolls are used for guiding the strip, and support rolls is a more general term, but the standard term in four-high mills is back up rolls.
A 3-jaw chuck is used in a lathe to clamp
A)
cylindrical work-piece to locate the axis of rotation
B)
eccentric work-piece to locate the axis of rotation
C)
square bar to locate the axis of rotation
D)
any type of work-piece to locate the axis of rotation
A 3-jaw self-centering chuck is mainly used for holding round or cylindrical workpieces. All three jaws move simultaneously, so the work is centered automatically and the axis of rotation is located at the center. It is not suitable for eccentric workpieces, and square bars are generally held in a 4-jaw chuck or special chuck.
Which of the following tool materials is the hardest?
A)
ceramic tool
B)
high speed tool
C)
carbide tool
D)
diamond tools
Among common cutting tool materials, diamond has the highest hardness. Ceramic tools are hard and wear-resistant, carbide tools are harder than high-speed steel, and high-speed tools are the least hard among these options. Therefore, diamond tools are the hardest.
There is no electrode consumption for which of the following processes?
A)
TIG welding
B)
gas welding
C)
laser welding
D)
arc welding
Electrode consumption means the electrode itself is melted and added to the weld pool. In laser welding, heat is produced by a laser beam, so no electrode is used at all, hence no electrode consumption. TIG welding uses a non-consumable tungsten electrode, so it also does not consume the electrode, but among the given options the standard answer expected is laser welding because it uses no electrode. Gas welding does not use an electrode, but it uses a filler rod if needed. Arc welding generally uses a consumable electrode, so electrode consumption occurs.
Which process is used for fine hole drilling and contour machining?
A)
EBM
B)
LBM
C)
ECM
D)
USM
Ultrasonic Machining (USM) is used for fine hole drilling and contour machining, especially in hard, brittle materials. In USM, abrasive slurry and ultrasonic vibrations remove material accurately with low thermal damage. EBM is mainly for micro-drilling using electron beam, LBM is for laser drilling/cutting, and ECM is used for contouring and shaping conductive materials but not specifically fine hole drilling in brittle materials.